Nord-Lock^® Washers

Wedge-locking washers in A4-316 stainless steel, sold as bolt-lock pairs. Standard (NL) and slim XS (NL SP). M5 through M30 in stock.

Washer Type

Back to Nord-Lock® overview →

Certification & traceability Unique to PTS

Choose your certificate online and view batch numbers and country of origin for full traceability on every order.

Nord-Lock® — Wedge-Locking WashersA4-316Price per 100 · pack quantities shown

In stock Low On order

Size	Availability	Batch / Cert	Price / 100	Pack
M5NL 5 Nord-Lock®	In stock 6,420	Cert & batch	£2.85	2
M6NL 6 Nord-Lock®	In stock 12,480	Cert & batch	£1.95	2
M8NL 8 Nord-Lock®	In stock 9,860	Cert & batch	£2.45	2
M10NL 10 Nord-Lock®	In stock 7,230	Cert & batch	£3.10	2
M12NL 12 Nord-Lock®	In stock 5,510	Cert & batch	£4.15	2
M16NL 16 Nord-Lock®	In stock 3,980	Cert & batch	£6.85	2
M20NL 20 Nord-Lock®	In stock 2,760	Cert & batch	£10.50	2
M24NL 24 Nord-Lock®	In stock 1,640	Cert & batch	£14.75	2
M30NL 30 Nord-Lock®	Low stock 980	Cert & batch	£22.40	2
M5NL 5 SP Nord-Lock®	In stock 4,200	Cert & batch	£3.65	2
M6NL 6 SP Nord-Lock®	In stock 8,410	Cert & batch	£2.85	2
M8NL 8 SP Nord-Lock®	In stock 6,120	Cert & batch	£3.40	2
M10NL 10 SP Nord-Lock®	In stock 4,800	Cert & batch	£4.25	2
M12NL 12 SP Nord-Lock®	In stock 3,610	Cert & batch	£5.85	2
M16NL 16 SP Nord-Lock®	In stock 2,240	Cert & batch	£8.90	2
M20NL 20 SP Nord-Lock®	Low stock 1,380	Cert & batch	£13.50	2

Dimensional data

Size (d)	Pitch	A/F (s)	C/F (e)≈	Thick (m)
M1.0	0.25	2.50-2.40	2.89	0.80-0.55
M1.2	0.25	3.00-2.90	3.46	1.00-0.75
M1.4	0.30	3.00-2.90	3.46	1.20-0.95
M1.6	0.35	3.20-3.02	3.70	1.30-1.05
M1.7	0.35	3.50-3.38	4.04	1.40-1.15
M2	0.40	4.00-3.82	4.62	1.60-1.35
M2.3	0.40	4.50-4.32	5.20	1.80-1.55
M2.5	0.45	5.00-4.82	5.77	2.00-1.75
M2.6	0.45	5.00-4.82	5.77	2.00-1.75
M3	0.50	5.50-5.32	6.35	2.40-2.15
M3.5	0.60	6.00-5.82	6.93	2.80-2.55
M4	0.70	7.00-6.78	8.08	3.20-2.90
M5	0.80	8.00-7.78	9.24	4.00-3.70
M6	1.00	10.00-9.78	11.55	5.00-4.70
M7	1.00	11.00-10.73	12.70	5.50-5.20
M8	1.25	13.00-12.73	15.01	6.50-6.14
M10	1.50	17.00-16.73	19.63	8.00-7.64
M12	1.75	19.00-18.67	21.94	10.00-9.64
M14	2.00	22.00-21.67	25.40	11.00-10.30
M16	2.00	24.00-23.67	27.71	13.00-12.30
M18	2.50	27.00-26.16	31.18	15.00-14.30
M20	2.50	30.00-29.16	34.64	16.00-14.90
M22	2.50	32.00-31.00	36.95	18.00-16.90
M24	3.00	36.00-35.00	41.57	19.00-17.70
M27	3.00	41.00-40.00	47.34	22.00-20.70
M30	3.50	46.00-45.00	53.12	24.00-22.70
M33	3.50	50.00-49.00	57.74	26.00-24.70
M36	4.00	55.00-53.80	63.51	29.00-27.40
M39	4.00	60.00-58.80	69.28	31.00-29.40
M42	4.50	65.00-63.10	75.06	34.00-32.40
M45	4.50	70.00-68.10	80.83	36.00-34.40
M48	5.00	75.00-73.10	86.60	38.00-36.40
M52	5.00	80.00-78.10	92.38	42.00-40.40
M56	5.50	85.00-82.80	98.15	45.00-43.40

All dimensions in mm. ≈ across-corners (e) is calculated from nominal geometry as a guide. The drawing stays in view as you scroll the table.

Why BUMAX® strength matters

Standard A4 stainless offers ~500 MPa tensile strength. BUMAX 88 reaches 800 MPa, BUMAX 109 hits 1,100 MPa — the same corrosion resistance as A4, three times the strength. Used in offshore, rail, wind energy and defence critical applications.

View all BUMAX® products →

800 MPaBUMAX 88

1,100 MPaBUMAX 109

3×vs standard A4

Batch & certificate

Choose your certificate, batch and country of originWhat are PMI & 3.1 certs?

Unique to PTS ×

1 Choose certification

FastestNo certificateIncludedStandard documentation — dispatched fastest. PMI Certificate£83.27Positive material identification test. EN 10204 3.1£76.33Full mill cert — heat / batch traceable.

2 Choose a batch & country of origin

Batch	Country of origin	Certs available	Availability
82963	Italy	PMI · 3.1 · None	38,400 in stock	Select
TBC	—	PMI · None	57,800 · 2–3 weeks	Select

Selected: No certificatePMI Certificate · £83.27EN 10204 3.1 · £76.33CancelConfirm selection

Nord-Lock®

About Nord-Lock® wedge-locking washers

Nord-Lock® washers lock with tension rather than friction: paired cams rise higher than the thread pitch, so any attempt to rotate loose wedges the joint tighter.

Where they are used

Extreme vibration and dynamic loading — rail, mining, wind and heavy plant.

More detail in the Knowledge Hub.

Fast global shippingSame-day dispatch on most orders before 16:30 UK time

46,000+ products liveLargest range of Metric in Europe & Inch outside the USA

120+ countries servedGlobal distribution direct from the UK

Trusted by 40,000+Rated 4.8/5 · over 37 years of expertise